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In Stud 8 4th street, my A-2-3 caught a King and my opponent (4 up) caught a 5. My board is higher, so I act first: bet or check?

Heads-up, PokerToast's limit Stud 8 solver checks with A-2-3-K against 4-5 showing, first to act 100.0% of the time.

The spot

The solver's numbers

The solver's answer
PlayHow often (strategy)Worth from here on (EV estimate, small bets)
Check100.0%+0.33
Bet0.0%+0.09

Measured on 1,291 play-outs of this situation. The highlighted row is the play that measured best.

Why, in plain words

Check and bet are worth about the same here (0.24 small bets apart, within the measuring noise of about 0.25), so neither is a real mistake; the solver's usual choice is to check (100.0%).

What popular strategy articles say

We found no published answer to this exact spot (AI search, checked 2026-10-08).

Among the sources AI search surfaced, the numbers on this page are the only direct answer to this spot.

Heads-up vs multiway

The numbers above are for heads-up play (two players). Most published advice is written for full-ring games with several players in the pot, so part of any difference can come from that.

How these numbers were made

From PokerToast's own heads-up limit Stud 8 solver, trained 7,862,000 iterations, exported 2026-10-05 09:56:29, 47,383 situations (version E-7862000-20261005095629). It learned by self-play (Monte Carlo counterfactual regret minimization) for limit betting, at most four bets a street.

Practice it

Part of: Stud 8 after 3rd street: one-way hands, scooping and splitting

More Stud 8 spots: Stud 8: complete A-2-3 suited against a deuce bring-in? · Stud 8: you are the bring-in with A-2-3 suited. Bring in or complete? · Stud 8: a pair of Queens on 3rd street against a deuce bring-in · Stud 8: Queens in the hole, an Ace completes your bring-in · Stud 8: a pair of 5s, you brought in with a 2, an Ace completes · Stud 8: play K-Q-J against a deuce bring-in? · Stud 8 4th street: A-5-3 catches a Queen, K-4 bets. Call or fold? · Stud 8: brought in with 2-4-6, an Ace completes. Defend? · Stud 8: a pair of Aces with a 4 against a deuce bring-in. Complete? · Stud 8: 3-4-5 (no Ace) against a deuce bring-in. Complete? · Stud 8: A-2 in the hole with a King up against a 3 bring-in. Complete, call or fold? · Stud 8: Kings in the hole, an Ace completes your bring-in · Stud 8: a rough low draw (8-7-6) against a deuce bring-in. Complete? · Stud 8 4th street: Queens catch a 9, the low draw catches a 4. Bet or check? · Stud 8: a pair of 8s with a 4 against a deuce bring-in. Complete? · Stud 8 4th street: Kings against an Ace that catches a 5 and bets. Call or fold? · Stud 8 6th street: a made 8-low, one way, against open Kings that bet. Call or raise? · Stud 8: three high suited cards (K-Q-9) against a deuce bring-in. Complete, call or fold? · Stud 8: you complete A-2-3, the deuce bring-in re-raises. Cap, call or fold?